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                        Required Gems
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                            <b>1.</b>
                        
                        Module 0x1 | Basic Ruby Kung Fu
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                            <b>1.1.</b>
                        
                        String
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                            <b>1.1.1.</b>
                        
                        Conversion
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                        Extraction
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                            <b>1.2.</b>
                        
                        Array
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                            <b>2.</b>
                        
                        Module 0x2 | System Kung Fu
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                            <b>2.1.</b>
                        
                        Command Execution
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                            <b>2.2.</b>
                        
                        File manipulation
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                            <b>2.2.1.</b>
                        
                        Parsing HTML, XML, JSON
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                            <b>2.3.</b>
                        
                        Cryptography
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                            <b>2.4.</b>
                        
                        Remote Shell
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                            <b>2.4.1.</b>
                        
                        Ncat.rb
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                            <b>2.4.2.</b>
                        
                        RCE as a Service
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                            <b>2.5.</b>
                        
                        VirusTotal
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                            <b>3.</b>
                        
                        Module 0x3 | Network Kung Fu
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                            <b>3.1.</b>
                        
                        Ruby Socket
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                            <b>3.2.</b>
                        
                        SSID Finder
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                            <b>3.3.</b>
                        
                        FTP
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                            <b>3.4.</b>
                        
                        SSH
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                            <b>3.5.</b>
                        
                        Email
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                            <b>3.5.1.</b>
                        
                        SMTP Enumeration
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                            <b>3.6.</b>
                        
                        Network Scanning
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                            <b>3.6.1.</b>
                        
                        Nmap
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                            <b>3.7.</b>
                        
                        DNS
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                            <b>3.7.1.</b>
                        
                        DNS Enumeration
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                            <b>3.8.</b>
                        
                        SNMP Enumeration
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                            <b>3.9.</b>
                        
                        Oracle TNS Enumeration
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                            <b>3.10.</b>
                        
                        Packet manipulation
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                            <b>3.10.1.</b>
                        
                        ARP Spoofing
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                            <b>3.10.2.</b>
                        
                        DNS Spoofing
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                            <b>4.</b>
                        
                        Module 0x4 | Web Kung Fu
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                            <b>4.1.</b>
                        
                        SQL Injection Scanner
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                            <b>4.2.</b>
                        
                        Databases
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                            <b>4.3.</b>
                        
                        Extending Burp Suite
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                            <b>4.4.</b>
                        
                        Browser Manipulation
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                            <b>4.5.</b>
                        
                        Web Services and APIs
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                            <b>4.5.1.</b>
                        
                        Interacting with Web Services
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                            <b>4.5.2.</b>
                        
                        Interacting with APIs
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                            <b>4.5.2.1.</b>
                        
                        WordPress API
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        <li class="chapter " data-level="4.5.2.2" data-path="module_0x4__web_kung_fu/twitter_api.html">
            
                
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                            <b>4.5.2.2.</b>
                        
                        Twitter API
                    </a>
            
            
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                            <b>4.6.</b>
                        
                        Ruby 2 JavaScript
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                            <b>4.7.</b>
                        
                        Web Server and Proxy
                    </a>
            
            
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        <li class="chapter " data-level="5" data-path="module_0x5__exploitation_kung_fu/index.html">
            
                
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                            <b>5.</b>
                        
                        Module 0x5 | Exploitation Kung Fu
                    </a>
            
            
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        <li class="chapter " data-level="5.1" data-path="module_0x5__exploitation_kung_fu/fuzzer.html">
            
                
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                            <b>5.1.</b>
                        
                        Fuzzer
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        <li class="chapter " data-level="5.2" data-path="module_0x5__exploitation_kung_fu/metasploit.html">
            
                
                    <a href="../module_0x5__exploitation_kung_fu/metasploit.html">
                
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                            <b>5.2.</b>
                        
                        Metasploit
                    </a>
            
            
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        <li class="chapter " data-level="5.2.1" data-path="module_0x5__exploitation_kung_fu/auxiliary_module.html">
            
                
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                            <b>5.2.1.</b>
                        
                        Auxiliary module
                    </a>
            
            
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        <li class="chapter " data-level="5.2.2" data-path="module_0x5__exploitation_kung_fu/exploit_module.html">
            
                
                    <a href="../module_0x5__exploitation_kung_fu/exploit_module.html">
                
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                            <b>5.2.2.</b>
                        
                        Exploit module
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        <li class="chapter " data-level="5.2.3" data-path="module_0x5__exploitation_kung_fu/meterpreter.html">
            
                
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                            <b>5.2.3.</b>
                        
                        Meterpreter
                    </a>
            
            
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        <li class="chapter " data-level="5.2.3.1" data-path="module_0x5__exploitation_kung_fu/extensions.html">
            
                
                    <a href="../module_0x5__exploitation_kung_fu/extensions.html">
                
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                            <b>5.2.3.1.</b>
                        
                        API and Extensions
                    </a>
            
            
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        <li class="chapter " data-level="5.2.3.2" data-path="module_0x5__exploitation_kung_fu/meterpreter_scripting.html">
            
                
                    <a href="../module_0x5__exploitation_kung_fu/meterpreter_scripting.html">
                
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                            <b>5.2.3.2.</b>
                        
                        Meterpreter Scripting
                    </a>
            
            
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        <li class="chapter " data-level="5.2.3.3" data-path="module_0x5__exploitation_kung_fu/railgun_api_extension.html">
            
                
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                        Android Forensic
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                        Network Traffic Analysis
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                        Parsing Log Files
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                    <section class="normal" id="section-">
                    
                        <h1 id="pure-ruby-netcat"><a name="pure-ruby-netcat" class="plugin-anchor" href="#pure-ruby-netcat"><span class="fa fa-link"></span></a>Pure Ruby Netcat</h1>
<h2 id="simple-ncatrb"><a name="simple-ncatrb" class="plugin-anchor" href="#simple-ncatrb"><span class="fa fa-link"></span></a>Simple Ncat.rb</h2>
<p>I found <a href="http://4thmouse.com/index.php/2008/02/20/netcat-clone-in-three-languages-part-i-ruby/" target="_blank">this</a> simple ncat so I did some enhancements on it and add some comments in it as well. </p>
<pre><code class="lang-ruby"><span class="hljs-comment">#!/usr/bin/ruby</span>
<span class="hljs-keyword">require</span> <span class="hljs-string">&apos;optparse&apos;</span>
<span class="hljs-keyword">require</span> <span class="hljs-string">&apos;ostruct&apos;</span>
<span class="hljs-keyword">require</span> <span class="hljs-string">&apos;socket&apos;</span>

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">String</span></span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">red</span>;</span> colorize(<span class="hljs-keyword">self</span>, <span class="hljs-string">&quot;\e[1m\e[31m&quot;</span>); <span class="hljs-keyword">end</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">green</span>;</span> colorize(<span class="hljs-keyword">self</span>, <span class="hljs-string">&quot;\e[1m\e[32m&quot;</span>); <span class="hljs-keyword">end</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">cyan</span>;</span> colorize(<span class="hljs-keyword">self</span>, <span class="hljs-string">&quot;\e[1;36m&quot;</span>); <span class="hljs-keyword">end</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">bold</span>;</span> colorize(<span class="hljs-keyword">self</span>, <span class="hljs-string">&quot;\e[1m&quot;</span>); <span class="hljs-keyword">end</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">colorize</span><span class="hljs-params">(text, color_code)</span>  &quot;<span class="hljs-comment">#{color_code}#{text}\e[0m&quot; end</span></span>
<span class="hljs-keyword">end</span>


<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">NetCat</span></span>

  <span class="hljs-comment">#</span>
  <span class="hljs-comment"># Parsing options</span>
  <span class="hljs-comment">#</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">parse_opts</span><span class="hljs-params">(args)</span></span>
    <span class="hljs-variable">@options</span> = <span class="hljs-constant">OpenStruct</span>.new
    opts = <span class="hljs-constant">OptionParser</span>.new <span class="hljs-keyword">do</span> |opts|
        opts.banner = <span class="hljs-string">&quot;Usage: <span class="hljs-subst">#{__FILE_<span class="hljs-number">_</span>}</span>.rb [options]&quot;</span>
        opts.on(<span class="hljs-string">&apos;-c&apos;</span>, <span class="hljs-string">&apos;--connect&apos;</span>,
            <span class="hljs-string">&quot;Connect to a remote host&quot;</span>) <span class="hljs-keyword">do</span>
            <span class="hljs-variable">@options</span>.connection_type = <span class="hljs-symbol">:connect</span>
        <span class="hljs-keyword">end</span>
        opts.on(<span class="hljs-string">&apos;-l&apos;</span>, <span class="hljs-string">&apos;--listen&apos;</span>,
            <span class="hljs-string">&quot;Listen for a remote host to connect to this host&quot;</span>) <span class="hljs-keyword">do</span>
            <span class="hljs-variable">@options</span>.connection_type = <span class="hljs-symbol">:listen</span>
        <span class="hljs-keyword">end</span>
        opts.on(<span class="hljs-string">&apos;-r&apos;</span>, <span class="hljs-string">&apos;--remote-host HOSTNAME&apos;</span>, <span class="hljs-constant">String</span>,
            <span class="hljs-string">&quot;Specify the host to connect to&quot;</span>) <span class="hljs-keyword">do</span> |hostname|
            <span class="hljs-variable">@options</span>.hostname = hostname || <span class="hljs-string">&apos;127.0.0.1&apos;</span>
        <span class="hljs-keyword">end</span>
        opts.on(<span class="hljs-string">&apos;-p&apos;</span>, <span class="hljs-string">&apos;--port PORT&apos;</span>, <span class="hljs-constant">Integer</span>,
            <span class="hljs-string">&quot;Specify the TCP port&quot;</span>) <span class="hljs-keyword">do</span> |port|
            <span class="hljs-variable">@options</span>.port = port
        <span class="hljs-keyword">end</span>
        opts.on(<span class="hljs-string">&apos;-v&apos;</span>, <span class="hljs-string">&apos;--verbose&apos;</span>) <span class="hljs-keyword">do</span>
            <span class="hljs-variable">@options</span>.verbose = <span class="hljs-symbol">:verbose</span>
        <span class="hljs-keyword">end</span>
        opts.on_tail(<span class="hljs-string">&apos;-h&apos;</span>, <span class="hljs-string">&apos;--help&apos;</span>, <span class="hljs-string">&quot;Show this message&quot;</span>) <span class="hljs-keyword">do</span>
            puts opts
            exit
        <span class="hljs-keyword">end</span>
    <span class="hljs-keyword">end</span>

    <span class="hljs-keyword">begin</span>
        opts.parse!(args)
    <span class="hljs-keyword">rescue</span> <span class="hljs-constant">OptionParser::ParseError</span> =&gt; err
      puts err.message
      puts opts
      exit
    <span class="hljs-keyword">end</span>
    <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.connection_type == <span class="hljs-keyword">nil</span>
      puts <span class="hljs-string">&quot;[!] &quot;</span>.red + <span class="hljs-string">&quot;No Connection Type specified&quot;</span>
      puts opts
      exit
    <span class="hljs-keyword">end</span>
    <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.port == <span class="hljs-keyword">nil</span>
      puts <span class="hljs-string">&quot;[!] &quot;</span>.red + <span class="hljs-string">&quot;No Port specified to <span class="hljs-subst">#{<span class="hljs-variable">@options</span>.connection_type.to_s.capitalize}</span>&quot;</span>
      puts opts
      exit
    <span class="hljs-keyword">end</span>
    <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.connection_type == <span class="hljs-symbol">:connect</span> &amp;&amp; <span class="hljs-variable">@options</span>.hostname == <span class="hljs-keyword">nil</span>
      puts <span class="hljs-string">&quot;[!] &quot;</span>.red + <span class="hljs-string">&quot;Connection type connect requires a hostname&quot;</span>
      puts opts
      exit
    <span class="hljs-keyword">end</span>
  <span class="hljs-keyword">end</span>

  <span class="hljs-comment">#</span>
  <span class="hljs-comment"># Socket Management</span>
  <span class="hljs-comment">#</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">connect_socket</span></span>
    <span class="hljs-keyword">begin</span>
      <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.connection_type == <span class="hljs-symbol">:connect</span>
        <span class="hljs-comment"># Client</span>
        puts <span class="hljs-string">&quot;[+] &quot;</span>.green + <span class="hljs-string">&quot;Connecting to &quot;</span> + <span class="hljs-string">&quot;<span class="hljs-subst">#{<span class="hljs-variable">@options</span>.hostname}</span>&quot;</span>.bold + <span class="hljs-string">&quot; on port &quot;</span> + <span class="hljs-string">&quot;<span class="hljs-subst">#{<span class="hljs-variable">@options</span>.port}</span>&quot;</span>.bold <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.verbose == <span class="hljs-symbol">:verbose</span>
        <span class="hljs-variable">@socket</span> = <span class="hljs-constant">TCPSocket</span>.open(<span class="hljs-variable">@options</span>.hostname, <span class="hljs-variable">@options</span>.port)
      <span class="hljs-keyword">else</span>
        <span class="hljs-comment"># Server</span>
        puts <span class="hljs-string">&quot;[+] &quot;</span>.green + <span class="hljs-string">&quot;Listing on port &quot;</span> + <span class="hljs-string">&quot;<span class="hljs-subst">#{<span class="hljs-variable">@options</span>.port}</span>&quot;</span>.bold <span class="hljs-keyword">if</span> <span class="hljs-variable">@options</span>.verbose == <span class="hljs-symbol">:verbose</span>
        server = <span class="hljs-constant">TCPServer</span>.new(<span class="hljs-variable">@options</span>.port)
        server.listen(<span class="hljs-number">1</span>)
        <span class="hljs-variable">@socket</span> = server.accept
        print <span class="hljs-string">&quot;-&gt; &quot;</span>.cyan
      <span class="hljs-keyword">end</span>
    <span class="hljs-keyword">rescue</span> <span class="hljs-constant">Exception</span> =&gt; e
      puts <span class="hljs-string">&quot;[!] &quot;</span>.red + <span class="hljs-string">&quot;Error [1]: &quot;</span> + <span class="hljs-string">&quot;<span class="hljs-subst">#{e}</span>&quot;</span>
      exit
    <span class="hljs-keyword">end</span>

  <span class="hljs-keyword">end</span>

  <span class="hljs-comment">#</span>
  <span class="hljs-comment"># Data Transfer Management</span>
  <span class="hljs-comment">#</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">forward_data</span></span>
    <span class="hljs-keyword">while</span> <span class="hljs-keyword">true</span>
      <span class="hljs-keyword">if</span> <span class="hljs-constant">IO</span>.select([],[],[<span class="hljs-variable">@socket</span>, <span class="hljs-constant">STDIN</span>],<span class="hljs-number">0</span>)
        socket.close
      <span class="hljs-keyword">end</span>

      <span class="hljs-comment"># Send command if done from receiving upto 2-billions bytes</span>
      <span class="hljs-keyword">begin</span>
        <span class="hljs-keyword">while</span> (data = <span class="hljs-variable">@socket</span>.recv_nonblock(<span class="hljs-number">2000000000</span>)) != <span class="hljs-string">&quot;&quot;</span>
          <span class="hljs-constant">STDOUT</span>.write(data)
          print <span class="hljs-string">&quot;-&gt; &quot;</span>.cyan
        <span class="hljs-keyword">end</span>
        exit
      <span class="hljs-keyword">rescue</span> <span class="hljs-constant">Errno::EAGAIN</span>
        <span class="hljs-comment"># http://stackoverflow.com/questions/20604130/how-to-use-rubys-write-nonblock-read-nonblock-with-servers-clients</span>
      <span class="hljs-keyword">end</span>

      <span class="hljs-keyword">begin</span>
        <span class="hljs-keyword">while</span> (data = <span class="hljs-constant">STDIN</span>.read_nonblock(<span class="hljs-number">2000000000</span>)) != <span class="hljs-string">&quot;&quot;</span>
          <span class="hljs-variable">@socket</span>.write(data)
        <span class="hljs-keyword">end</span>
        exit
      <span class="hljs-keyword">rescue</span> <span class="hljs-constant">Errno::EAGAIN</span>
        <span class="hljs-comment"># http://stackoverflow.com/questions/20604130/how-to-use-rubys-write-nonblock-read-nonblock-with-servers-clients</span>
      <span class="hljs-keyword">rescue</span> <span class="hljs-constant">EOFError</span>
        exit
      <span class="hljs-keyword">end</span>

      <span class="hljs-comment"># Get all remote system socket(STDIN, STDOUT, STDERR) To my STDIN</span>
      <span class="hljs-constant">IO</span>.select([<span class="hljs-variable">@socket</span>, <span class="hljs-constant">STDIN</span>], [<span class="hljs-variable">@socket</span>, <span class="hljs-constant">STDIN</span>], [<span class="hljs-variable">@socket</span>, <span class="hljs-constant">STDIN</span>])
    <span class="hljs-keyword">end</span>

  <span class="hljs-keyword">end</span>

  <span class="hljs-comment">#</span>
  <span class="hljs-comment"># Run Ncat</span>
  <span class="hljs-comment">#</span>
  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">run</span><span class="hljs-params">(args)</span></span>
    parse_opts(args)
    connect_socket
    forward_data
  <span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
ncat = <span class="hljs-constant">NetCat</span>.new
ncat.run(<span class="hljs-constant">ARGV</span>)
</code></pre>
<ul>
<li><p>To listen </p>
<pre><code>ruby ncat.rb -lvp 443
</code></pre></li>
<li><p>To connect </p>
<pre><code>ruby ncat.rb -cv -r RHOST -p 443
</code></pre></li>
</ul>
<h2 id="another-implementation-of-ncatrb"><a name="another-implementation-of-ncatrb" class="plugin-anchor" href="#another-implementation-of-ncatrb"><span class="fa fa-link"></span></a>Another Implementation of Ncat.rb</h2>
<p>Again from <a href="https://github.com/Hood3dRob1n/" target="_blank">Hood3dRob1n</a> a standalone <a href="https://github.com/Hood3dRob1n/RubyCat" target="_blank">RubyCat</a> which supports password protection for bind shell.</p>
<h2 id=""><a name="" class="plugin-anchor" href="#"><span class="fa fa-link"></span></a><br><br><br></h2>

                    
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